I have done a Document library migration from SP 2007 to SP 2013 but the look & Feel does not update to SP 2013 Look & Feel and also many of the ECB and Ribbon menu options are disabled. For example delete, version History etc. remain disabled when I select the specific document even document versioning is enabled. I think it has something to do with Solution manifest file as I was able to fix this issue only once by making some random changes to Manifest.xml file of exported package but can't figure out the exact location and still suffering from same issue from long time. I need quick help on this. please if anyone can suggest a solution then it will be great.
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